hunter



W. W. HUNTER, OF THE UNITED STATES NAVY.

STEAM NAVIGATION BY WHICH A SUBIVIERGED PROPELLER IS MADE TO OPERATE .AS AN AIR-PUMP AND CONDENSER.

Specification of Letters Patent No. 2,487, dated March 12, 1842.

To @ZZ whom i may concern Be it known that I, WM. WV. HUNTER, a lieutenant in the United States Navy, have invented a new and Improved mode of using the steam engine for the propulsion of vessels by which the submerged paddle Wheel is made to serve as an air-pump, and the Water contained Within the case in which it revolves, as a condenser, thereby conterring all the advantages of a condensing engine, With the lightness and simplicity of y the high-pressure steam-engine, With also ducted Within said case by the vacuum in part, or 1n Whole, formed by the centrifuga-l action of the paddleJvheel; so that the Water contained Within said paddle Wheel case is made to condense said escape steam.

To enable others skilled in the art to make use of my invention, I Will proceed to describe its construction, and opera-tion, and in so doing, refer to the duplicate drawings in your omce, Where one halt' of the middle section of a vessel with one paddle- Wheel, and condensing pipe is` represented.

A A A A one half of the middle section of a vessel; B B, the hollovv hub of the paddle-\vheel; C C, the paddles; D, the paddle- Wheel shaft; E E E E E, the case in Which the paddle-Wheel revolves; F F F F F, the space betweenpaddle-Wheel and case; G, the condensing pipe.

The escape steam is made to exhaust about the axis of the paddle-Wheel shaft D, by means of the pipe Gr, and the centrifugal action of the paddle-Wheel causes in part, or in Whole, a'vacuum Within the cylinder of the steam engine, and the Water con'- tained Within the case; E E E E E, condenses the escape steam conducted to it through the pipe G.

What I claim .as my invention and desire to secure by Letters Patent, is-

The application of the submerged paddlewheel for the purpose of an airspump, to the steam engine, and the case in which the paddle-Wheel revolves as a condenser to the steam engine.

IVM. IV. HUNTER. Witnesses:

MYER MYERS, THos. B. CAMP, 

